Brake mechanism.



E. SANTSCHE. BRA-KB MECHANISM.

APPLICATION FILED OCT. 12, 1908.

Patented Dec. 21, 1909. 2 SHEETS- SEEETI' 1.

Egt]. I 22* S v INVENTOIL 7 i2, SANTSOHE.

BRAKE MECHANISM. APPLICATION IILBD OCT. 12, 1908. 4

Patented-D6621, 1909.

2 HEIGHTS-SHEET 2.

NVENTOR. 4M1 I 6 f iawz WITNESSES.. v

UNITED STA S PATENT OFFICE.

EMIL SANTSCHE, OF EUREKA,

CALIFORNIA, ASSIGNOR OF TWO-FIFTHS TO JOHN A.

PRENTICE AND ON E-FIFTH TO JOSEPH BAGLEY, BOTH OF EUREKA, CALIFORNIA.

BRAKE MECHANISM.

Specification of Letters Patent.

Patented Dec. 21, 1909.

Application filed October 12, 1908. Serial No. 457,246.

To all whom it may concern:

Be it known that 1, EMKL SaN'rsm-m, a citizen of the United States,residing at Eureka, in the county of Humboldt and State of California,have invented certain new and useful Improvements in Brake Mechanisms,of which the following is a specification.

My invention relates to the class of brakes and is especially adaptedfor arresting the rotation of shafts.

'lhough adapted for many purposes, the particularapplication of mybraking self-propelled vehicles, like automobiles, in which the drivingpower is transmitted through a shaft.

The object of my invention is to provide a frictionless and noiselessbrake for such vehicle. capable of perfect control, efficient, and not.likely to get out of order.

- To these ends my invention consists in the combination with arotatable shaft, of a novel controllable fluid-resistance device,and asuitable controllable connection between them, whereby the rotation ofthe shaft may be rctarded and arrested.

It also consists in the novel construction, arrangement and combinationswhich I shall hereinafter. fully describe by reference to theaccompanying drawings in which Figure 1 is a side view, partly broken,of my brakeanechanism, the containing casing of the fluid-resistancedevice being in section. Fig. 2 is a longitudinal section, e11- larged,of one of the cylinders of the fluidresistancc device. Fig. 3 is a-topView of -the casin showing the'connection of the valve-pins to operatethem in unison. Fig. 4 is a diagrammatic pl n view showing anarrangement of three cylinders, comprising the fluid-resistam-e dev ce.

1 is a shaft to which rotation is imparted, and which, for the purposesof this description. may be assumed to be the drive-shaft of anautomobile.

2 is a casing which is to be suitably secured to some portion of theframe ofthe vehicle. Within this easing aretwo oppositely dispo edcylinders 3, which at their opposite ends are pivotal ly mounted on pins4 prop rly fixed in the casing. thereby adaptlog the c \-'lin(lcrs tooscillate. Within each cylinder is a piston 5, each having a rod 6.These piston rods suitably pass through the inner heads of thecylinders, and are con- I nected with the crank 7 of invention is for ll I a shaft 8, mounted in the casing 2. This shaft 8 extends downwardlythrough the casing and carries on its lower end a bevel gear 9.

Onthe drive shaft 1 is loosely mounted a bevel gear 10 which engageswith the bevel gear 9. 'ith the clutch hub 11 of gear 10, the clutch .12mounted to rotate with the shaft 1, is adapted, by a suitable connection13, under the control of the operator, to be thrown into and out ofengagement.

In the pivoted end ofeach cylinder 3 is a port 14, which communicateswith the cylinder on one side of its piston. In the cylinder wall isformed a passage 15, which extends from the pivoted end of said cylinderto itsother end and there comnnmicates jwith the cylinder on the otherside of its inston, as seen in Fig.

T [n the pivot pin 4 of each cylinder is a port- 16. which communicateswith the cylinderport 1st, and also in said pin is a port 17 whichcommunicates with the end of the cylinder passage 15. The ends of theseports 16 and 17, where they connnnnicate with the cylinder port andpassage are best made flaring, as shown, in order to preserve thecommunication under the limited oscillation of the cylinder on the pin.

The pivot pins 4 are hollow or bored out, and in each is fitted avalve-pin 18 adapted to turn on its axis therein. The valve-pin has aport 19 which by the axial movement. of said valve-pin is adapted tocontrol the. pivot-pin ports 16 and 17 to open them fully, or topartially or wholly close .them. To operate the valve-pins 18 in unison,their upper ends. above the casing are connectcd by a link 20, fromwhich extends a connection 21 to within the reach and con trol of theoperator.. In order to keep the supply of the fluid constant in thecylinders and compensate for leakage, cups .22 are provided,with pipes23 leading to a central duct 24 in the valvepins, the lower end of theduct. opening out into the port 1.) of said pins. A check valve 25 isfitted in the ipes 23. Any suitable fluid may be in the cylinders 3,aseous or liquid. .ssuming. for the -purposes of this description, thatoil, which for many reasons i. to be preferred, is in the cylinders,then the operation is as follows :-Normally, the clutch 12 lies out ofengagement with the 113 clutch-hub 11 of the loose gear 10, and therethrown to engagement with the clutch-hub of gear 10, which therebyeffects the rotation of said gear. Motion is thereupon ,transmittedthrough gear 9, shaft 8, and

crank 7-to the pistons 5 of the cylinders 3, the latter oscillating ontheir pivot pins 4 to'accoumodate the circular path of the crank. Thepistons force the oil contained in the cylinders. through the head-portsl4,

pivot-pin ports1.( and 17, valve-pin ports 1!), and cylinder passages15, in a continuous course from one side of the pistons to the otherside. pins 18 so that their portal!) will control the capacity of thiscourse, the resistance of the oil may be varied to suit the conditions.This resistance has the effect of retarding or arresting the rotation ofthe shaft 1 thereby serving as a brake.

.It is obvious that the gear-connection be tween the rotating shaft 1and the fluidresistanee device is only one form of transmissionconnection which may be employed; and it is equally plain that mylnvention 1s not confined to t'he'employment of a pair of pistons, forone, or three or more may be used, if desired. an arrangement of threecylinders which explains itself, the designatim numerals being the sameas those heretofhre applied to C(JI'IOHImDdlUg parts.

Having thus described my invention what I claim as new and desire tosecure by Let- 'ters Patent is lflll combination with a rotatabledriving shaft; a fluid-containing cylinder having a passage connectingits ends; a pivot connection at one end of the cylinder to permit itsoscillation; a valve seated in the axis of oscillation of said cylinder,adapted to control said passage; a piston in the cylinder \aving arodpassing out through one head of the cylinder; a crankshaft to whichsaid. piston rod is connected; power transmitting devices from therotatable shaft to operate the crank shaft, and means for throwing saidtransmitting devices into and out of action.

2. in combination with a. rotatable driving shaft; a plurality offluiid-containing cylinders each ha ring a passage connecting its ends;a'pivot connection at the outer end New by turning the valve-- Thus, inFig. 4, I show of each cylinder to permit its oscillation a valve seatedin the axis of oscillation of each. cylinder, adapted to control the as:sage therein; connections for operatin said valves in unison; apiston'in each cy inder having a rod passing out through the inner endthereof; a crank shaft to which all of said piston rods are connected incommon; power transmitting devices from the .rotatable shaft'to operatethe crank shaft, and means for throwing said transmitting devices intoand out of action.

3. In combination with airotatalole driv ing shaft, a fluid-containingcylinder havtransmitting devices from c the rotatable shaft to operatethe crank shaft, and means for throwing said transmitting devices intoand out of action.

4. In combinationwith a rotatable driving shaft; a lurality offluid-containing cylinders eachaving a passage connecting its ends; pinsupon'which the outer ends of the cylinders are pivoted, said pins havingports registering with the interior of the cylinders and with theirpassa es, whereb the fluid may ass from one en of each by :mder to its0t er end and return;' a valvepin rotatably mounted in each pivot pinand having a port disposed to cont-rolthe ports in said ivot pin;connections for operat-in said va ve-pins in unison; a piston inv eachcylinder having a rod passing out through the inner end thereof; a crankshaft to which all of said piston rods areconnected in common; powertransmitting devices from the rotatable shaft to operate the crankshaft, and means for throwing said transmitting devices into and out ofaction.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses. EMIL SANISU'IIE.

W itnesscs.

Jenn S. DEUEL,

G, A. MoLnAN.

